async function signinjian(req, res, next) {
    if (req.body.account.length === 0 || req.body.password.length === 0) {
        return res.status(400).send({
            Informationerror: "账号或密码不能为空！"
        });
    };
    if (req.body.account.length !== 10) {
        return res.status(400).send({
            Informationerror: "账号位数错误！！"
        });
    };
    return next();
}
module.exports = signinjian